Currently, the generated getter and setter methods use the client id of the component as a key to a map stored in the StateHelper to store values. The purpose of this is to differentiate among instances inside UIData, ui:repeat, etc. Using the client id leads to problems when building component programmatically or from a model, as in the case of the menu component. The problem is that the client id is tried to be determined when creating the component object, but since the component object is not yet attached to the component tree, the client ids turn out to be wrong in the rendered page. It is necessary to implement a different approach to save the component values without requiring to determine the client id at the moment of setting values that would still be able to differentiate among different instances of the same component in UIData, etc.
Improvement
Major